The combustible gas detection pen is a portable gas detection instrument that detects the presence of combustible gases in the air. In modern industrial production and daily life, combustible gas leakage may cause hazards such as explosions and fires, so it is necessary to detect combustible gases. The combustible gas detection pen adopts the detection principle of semiconductor sensors. Under certain temperature and voltage conditions, semiconductor sensors can detect combustible gases in the air. The detection pen will send out corresponding signals based on the detected gas concentration, displaying the current gas concentration, and will emit sound and light signals to remind the user whether the surrounding environment is dangerous. Combustible gas detection pens usually have fast response time and high sensitivity, and can detect very small concentrations of combustible gases. At the same time, the combustible gas detection pen has also undergone various safety tests and certifications, ensuring its safety for human health and the environment. The precautions for using a combustible gas detection pen include: self inspection or calibration must be carried out before use; Avoid detecting gas contamination of the pen tip; Regularly replace sensors or verify the accuracy of instruments, etc. In short, the combustible gas detection pen is a very effective gas detection instrument, which can effectively ensure the safety of people's lives and property. In industry and daily life, the use of combustible gas detection pens for gas detection has become increasingly common.